Door



Feb. 18, 1964 H. G. HAMMAR nooR Filed Dec. 4, 1961 I I/ Il I UnitedStates Patent O 3,121,264 DOOR Herbert G. Hammar, Dallas, Tex., assignerto New Moon Homes, inc., a corporation of Michigan Filed Bec. 4, 1961,Ser. No. 156,704 3 Ciaims. (Cl. Et-35) 'Ihis invention relates generallyto a door, and, more particularly, it relates to an improved dooradapted for use in a mobile home or house trailer.

Many types of door construction are, of course, well known, and mobilehomes have included various forms of construction for the doors ofmobile home coaches. Some doors have been fabricated with metal interiorand exterior faces disposed upon a supporting framework of wood. Otherdoors have been of an all metal construction with a metal supportingframework. Generally, it can be said that the interior face of the dooris usually the same as the interior of the home, so that if there is awood interior, the door interior face will desirably be wood.

It is desirable to have metal exterior facings and plywood paneling forinterior facings in the doors for various coaches. Aluminum extrusionshave been used in such doors to provide a framework for the doors.Because fastenings have been required to secure interior wood panelingto these aluminum extrusions, a molding is usually employed to concealthe fastenings to provide an unmarred appearance of the door. rIhemolding is not always desirable on the interior face of the door.

An object of the invention is to provide an improved door having a metalexterior face and a wood or plastic interior face. Another object of theinvention is the provision of a mobile home door having a metal face anda wood face without visible indications of the fastenings. A furtherobject of the invention is to provide a door of the indicatedconstruction which is inexpensive and pleasing in appearance.

Other objects and advantages of the invention will be apparent from thefollowing description thereof when considered in conjunction with theaccompanying drawings, wherein:

FIGURE l is a perspective view of the door of the invention;

FIGURE 2 is a fragmentary view, partially broken away, of an exteriordoor embodying the features of the invention;

FIGURE 3 is a fragmentary, plan view, also partially broken away, of thedoor illustrated in FIGURE 1; and

FIGURE 4 is a fragmentary, plan view, partially broken away, of a doorof an alternate construction.

As shown in the drawings, a preferred embodiment of the presentinvention, a lip type door, includes an exterior metal facing panel orsheet 5 which may be prenished, and an interior plywood facing panel 7.These panels 5 and 7 are attached to and supported by a frameworkcomprising a vertically extending end member 9, such as an aluminumextrusion, and two vertical wood studs 11, 13 which reinforce the door.On the lip edge of the door the metal exterior sheet 5 is attached tothe end member 9 by hemming and the wood stud 11 is fastened to the endmember 9. On the hinged edge of the door, the sheet 5, is bent so as toprovide a door edge and a holding surface to which the Wood stud 13 canbe directly fastened. The interior facing panel 7 is then securely gluedto the wood studs 11, 13. Thus, the invention obviates the need for anyouter visible fastenings and provides for over-all interior plywoodpaneling in a mobile home, without a concealing molding.

More particularly, as illustrated, the structure of the inventioncomprises an exterior metal panel or sheet 5 of a material, such asaluminum, usually that of which ice.

the remainder of the mobile home is constructed. The sheet 5 has anouter, finished face 14.

In order to provide a lip for the door in the preferred embodiment, anend member 9 is used to form one edge of the door. The end member 9,preferably an aluminum extrusion, has a main portion similar in shape toan angle iron with one leg 15 longer than the other leg 17. Projectingoutwardly from and generally normal to the outer Wall of the leg 15 is aflange 19. The sheet 5 is bonded to the end member 9 by hemming, i.e.,folding its edge over the shorter leg 17 of the end member 9, as shownin FIGURE 2.

At its opposite or hinged end, the sheet 5 itself is bent to form thedoor edge. As viewed from the top, FIG- URE 3, the sheet is bent degreesto the right to form an edge 21 to which hinges 22 are attached. It isthen turned inwardly upon itself to form an element 23 against which theplywood sheet 7 is seated. Lastly it is turned outwardly 90 degrees soas to form the flange 25 which is substantially parallel to the outerface 14 of the metal sheet 5.

To facilitate the attachment of the studs 11, 13, notches or slots 26are cut in one surface of them to accommodate the fianges 19, 25 asshown in FIGURE 3. Flush-type fasteners 27 are projected through theanges 19, 25 into the studs 11, 13 in order to secure the studs 11, 13to the door framework. If an aluminum extrusion is used which has areasonably thin flange 19, a heavy wire staple may be used as a fastener27. If desired, the connection between the stud 11 and the metalframework member 9 can be strengthen by providing small apertures in thelonger leg 15 to allow the use of fasteners, such as nails 29, in adirection generally perpendicular to the staples 27. These fastenerswould not particular detract from the appearance of the door.

When the studs 11, 13 have been attached by the fasteners 27, theremainder of the surface which was not affected by the notch serves as abase for glue or adhesive 31 by which the plywood sheet 7 is to beattached. The longer leg 15 of the end member 9 cooperates with theelement 23 to form edge walls for the interior plywood panel '7. Oncethe panel 7 has been seated, the woodto-wood bond of the glue line 31rmly holds it in the door, thus covering the flush fasteners 27. Inaddition, the use of the glue line 31 saves labor over the installationof a number of independent uniformly spaced-apart fasteners. The top andbottom of the door may be closed in any conventional manner.

In the assembled door, the exterior metal sheet 5 and the interiorplywood panel 7 dene an enclosure bounded on the sides by the woodenstuds 11, 13. This enclosure serves to hold a sheet of insulation 33which aids in the over-all insulation of the mobile home.

If a flush-fitting door is desired rather than the lip-type door shown,both edges of the door can be made in the style of the hinged edgeshown. Such a construction will alleviate the need for the end member 9.

An alternate door construction is shown in FIGURE 4, wherein likenumbers are used to identify corresponding pairs but are differentiatedby the use of the symbol prime In the structure shown in FIGURE 4, thefiange 19 of the member 9' is centered along the longer leg 15. Likewisethe element 23 is lengthened in the fashioning of the sheet so that theange 25is disposed closer to the face 14 of the sheet 5. Accordingly,the notches or slots 26 are cut in positions toward the center of thewooden studs 11', 13 leaving one entire surface of the studs 11', 13 toserve as a base for adhesive 31.

Various reatures of the invention which are believed to be new are setforth in the accompanying claims.

What is claimed is:

1. A unitary door structure having no visible fasteners which comprises(a) a supporting stud, (b) a metal sheet having a-face section formingthe outside surface of the door, (c) an edge Wall element connected tosaid face section having an edge portion forming one end of the door andhaving a flange projecting from said edge portion toward the other endof the door, said ange being generally parallel to and spaced apart fromsaid face section, (d) fastening means extending through said flangeinto said stud so as to interlock said supporting stud and said edgeWall element, (e) a non-metallic panel forming the inside surface of thedoor and being disposed adjacent said stud so as to conceal saidfastening means, (f) said edge portion extending beyond said stud so asto provide an enclosure for concealing the edge of said non-metallicpanel, and (g) means adhesively connecting said nonmetallic panel tosaid stud.

2. A unitary Vdoor structure having no visible fasteners which comprises(a) a supporting stud having a ylongitudinally extending slot formed inan outer face of said stud intermediate the width of said face, (b) ametal sheet having a face section forming the outside surface of thedoor, (c) an edge wall element connected to said face section having anedge portion forming one end of the door and having a ange 'projectingfrom said edge portion toward the other end of the door, said flangebeing generally parallel to and spaced apart a predetermined distancefrom said face section and proportioned so as to be accommodated in saidsiot, (d) fastening means extending through said flange into said studso as to interlock said supporting stud and said edge wall element, (e)a non-metallic panel forming the inside surface of the door and beingdisposed adjacent said stud so as to conceal said fastening means, (f)said edge portion extending beyond said stud so as to provide anenclosure for concealing the edge of said non-metallic panel, and g)means adhesively connecting said non-metallic panel to said stud. e

3. A unitary door structure having no visible fasteners which comprises(a) a supporting stud of generally rectangular cross section being cutaway at one corner to provide a longitudinally extending recess, (b) ametal sheet having a face section forming the outside surface of thedoor, (c) an edge wall element connected to said face section having anedge portion forming one end of the door and having a flange projectingfrom said edge portion toward the other end of the door, said flangebeing generally parallel to and spaced apart a predetermined distancefrom said face section so as to be accommodated in said corner recess insaid stud, (d) fastening means extending through said flange into saidstud so as to interlock said supporting stud and said edge Wall element,(e) a non-metallic panel forming the inside surface of the door andbeing disposed adjacent said stud so as to conceal said fastening means,(f) said edge portion extending beyond said stud so as to cooperate withsaid flange in providing a seat for the edge of said non-metallic panel,and (g) means adhesively connecting said nonmetallic panel to said stud.

References Cited in the file of this patent UNITED STATES PATENTS2,833,004 Johnson et al. May 6, 1958 2,864,132 Clements Dec. 16, 1958FOREIGN PATENTS 205,701 Austria Oct. 10, 1959 842,939 Great Britain July27, 1960

1. A UNITARY DOOR STRUCTURE HAVING NO VISIBLE FASTENERS WHICH COMPRISES(A) A SUPPORTING STUD, (B) A METAL SHEET HAVING A FACE SECTION FORMINGTHE OUTSIDE SURFACE OF THE DOOR, (C) AN EDGE WALL ELEMENT CONNECTED TOSAID FACE SECTION HAVING AN EDGE PORTION FORMING ONE END OF THE DOOR ANDHAVING A FLANGE PROJECTING FROM SAID EDGE PORTION TOWARD THE OTHER ENDOF THE DOOR, SAID FLANGE BEING GENERALLY PARALLEL TO AND SPACED APARTFROM SAID FACE SECTION, (D) FASTENING MEANS EXTENDING THROUGH SAIDFLANGE INTO SAID STUD SO AS TO INTERLOCK SAID SUPPORTING STUD AND SAIDEDGE WALL ELEMENT, (E) A NON-METALLIC PANEL FORMING THE INSIDE SURFACEOF THE DOOR AND BEING DISPOSED ADJACENT SAID STUD SO AS TO CONCEAL SAIDFASTENING MEANS, (F) SAID EDGE PORTION EXTENDING BEYOND SAID STUD SO ASTO PROVIDE AN ENCLOSURE FOR CONCEALING THE EDGE OF SAID NON-METALLICPANEL, AND (G) MEANS ADHESIVELY CONNECTING SAID NONMETALLIC PANEL TOSAID STUD.